Not yet investigated
What we have so far
In serious illness T3 falls and reverse T3 rises. Treating that as hypothyroidism has been tried, and it did not help — it may be an adaptation, not a failure.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.